Riveting-machine



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R. H. LOVE. RIVETING MACHINE,

Patented Mar. 15, 1898.

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(No Model.) 2 Sheets-Sheet 2 R. H. LOVE.

RIVETING MAGHINE.

N0. 600,733. P fluted Mar. 15,1898.

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PATENT RIVETING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 600,733, dated March 15, 1898. Application filed December 14, 1896. Serial No. 615,608. (No model.)

To all whom it may concern:

Be it known that I, ROBERT H. LOVE, a citizen of the United States, residing at Allen, in the county of Collin and State of Texas, have invented certain new and useful Improvements in Riveting-Machines; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specification, and to the letters of reference marked thereon.

My invention relates to an improvement in riveting-machines; and it consists in an operating-treadle,a mechanism connected thereto for forcing the rivet through the articles which are to be fastened together, and the bur, combined with a cutter for cutting 01f the point of the rivet when too long and a separate mechanism connected to the treadle for clenching the point of the rivet, as will be more fully described hereinafter.

The object of my invention is to produce a machine which will apply both the rivet and a bur to any articles which are to be secured together, cut off the point of the rivet when too long, and then clench the point of the rivet, the burs being fed automatically into position, thus leaving nothing for the operator to do but to select rivets of suflicient length for the work that is to be performed.

In the accompanying drawings, Figure 1 is a side elevation of a machine which embodies my invention complete, the operating parts being shown in solid lines in one position and in dotted lines in another position. Fig. 2 is a perspective of the anvil and the feeding mechanism for the burs,as well as the mechanism for operating the knife to cut off the point of the rivet. Fig. 3 is a vertical section taken through the anvil on the line X X of Fig. 4. Fig. 4 is a horizontal section taken through the anvil and showing the knife taken on the line YY of Fig. 3. Fig. 5 is a vertical crosssection taken through the hopper for the burs.

A represents the framework of the machine, which may be either of the construction or shape here shown or any other that may be preferred. Rising from the top of the base of the frame is the curved arm B, the upper end of which serves as a guide for the rod which drives the rivets. Upon the top of the table 0 is the hollow anvil D, either of the shape here shown or any other that may be preferred, and upon the top of which is placed the perforated and recessed anvil-block E, which forms the bottom of the tube F, through which the burs are fed from the hopper G. This tube F will be made of any desired length, and the opening H therethrough will be of just sufficient thickness to allow one bur at a time to be fed forward from the hopper. This hopper is preferably made of a tubular form and is largest at its upper end, so as to allow the burs to be fed freely therein, and from which the burs are taken one at a time by the feeding mechanism. The bottom of the tube F projects a suitable distance be yond the top at its outer end and has formed therein a concaved recess I to receiveeach bur as it is fed forward into position to be used.

Depending from the arm B is the support J for the rivet, and the pieces of leather or other material which are to be riveted together are placed between this support J and the anvil-block E, and the rivet is then forced down by the rod L, which is operated by the connecting-rod M, which is attached to the outer end of the lever N, that .is fulcrumed at O in suitable bearings which project upwardly from the arm B, the outer end of the lever being weighted, as shown. Connected tot-he opposite end of the lever N from the connecting-rod M is the jointed operating-rod P, which has its lower end fulcrumed in the slotted bearing Q, secured to the base of the standard A. The upper portion of the rod P is the longer of the two, and just below the joint between the two parts is the enlarge ment R, under which the curved rod or lever S, connected to the rear end of the treadle T, catches.

When a rivet is to be forced through the articles which are to be secured together, the operator forcibly depresses the spring-actuated treadle T, when the curved rod or lever S, secured to its end, first forces the rod upwardly and then inwardly, when the two jointed parts P form a toggle-joint and are locked rigidly in position by the end of the curved rod or lever S catching under the enlargement R, as shown in dotted lines. The front end of the lever N being depressed the rod L forces the rivet downward into position.

As the burs fall into the groove or channel H they are fed forward therein by a suitable plunger which enters the rear end of the channel and which has the angular slide U connected to its rear end. This end is made angular, as shown in Fig. 2, so as to extend around the front of the lower end of the arm B, and this slide U is operated by the lever V, which is pivoted upon the arm B and which has its upper end connected to the lever N by the connecting-rod WV. When the front end of the lever N rises, the lower end of the lever B is forced forward to feed forward a bur, and when the rear end of the lever N rises the plunger is retracted, so as to allow another bur to drop into the groove or channel H. This plunger consists simply of a straight piece which enters the rear end of the groove or channel and should be of the same thickness as the thinnest bur that is used.

Where rivets are used which are longer than necessary, a cutter X is used to cut off the projecting point, and this cutter is operated by the rod Y, which has a loop Z formed upon its outer end and through which the upper end of the rod P passes. The cutter X has its cutting edge preferably formed at an angle, and it enters the rear end of the anvil D just below its top, as shown in Figs. 3 and 4. Just after the lever N is operated sufliciently by the jointed rod P to force the rivet. into position the inward movement of the rod P, as shown by dotted lines, forces the cutter forward, so as to sever the projecting end of the rivet, and the cutter is then forced on beyond the rivet, so as to be out of the way of the clenching device A.

In order to adapt the rivet-operatin g mechanism to different thicknesses of materials, the lower end of the lower portion of the rod P has its pivot B to extend through the upper end of a slot 0, formed in the bearing Q. In this bearing Q is placed a spring D, upon the upper end of which the pivot B bears. When an unusual thickness of material is used, as the rod P straightens up into position the spring D is compressed and the lower end of the rod L is not forced downward toas great a distance as when a less thickness is used.

After the end of the rivet is cut off it becomes necessary to clench the rivet, so as to complete the operation of fastening the parts together. For this purpose a vertically-moving rod A is used and which has its lower end to pass up through the table into a guide E, placed inside of the anvil and in a direct line with the rivet. This rod A preferably has a projection F formed upon its upper end, and the rod itself is supported in position by a rest G, which extends outward from the standard A under the front end of the table 0. Pivoted in a suitable openingin the standard A is the hammer H, which is operated by the rod I, which is pivoted at its lower end to the treadle T. This rod I has its upper end to bear against the under side of the hammer H and is guided in its movement by a pin J, which passes through the standard, as shown in Fig. 1. After the treadle has been depressed and the curved rod or lever S has forced the rod P into the position shown in dotted lines in Fig. 1 the rounded end of the rod or lever S slips underneath the projection R, and then the full force of the movement of the treadle is utilized in forcing the rod 1 upward against the hammer H, which is driven with ample force against the lower end of the rod A. The reduced portion F of the upper end of the rod A strikes against the lower end of the rivet, which is held rigidly from above by the rod L, and the spreading of the lower end of the rivet takes place in the bottom of the recess I. As soon as the treadle is released the spring 0 returns the parts instantly to position.

Burs which are rounded or bellied on their under sides are preferred. The rivets may either have square or pointed ends. The upper end F of the rod A maybe either recessed or pointed, according to finish desired on the end of the rivet.

The stops or projections Q, which project from the rod I and which strike against the edge of the standard, serve to break the toggle-joint in the rod P and knock the rod P back by striking it on the inner side.

Having thus described my invention, I claim 1. In' a riveting-machine, an operatingtreadle, a'mechanism connected thereto for driving the rivets, a cutter which is operated by the same mechanism for cutting off the ends of the rivets and means, connected to the mechanism for driving the rivets, for feeding the burs into position, the parts being combined substantially as described.

2. In a riveting machine, an operatingtreadle, and a mechanism connected thereto for driving the rivets, combined with a cutter for cutting off the ends of the rivets, and means for feeding the burs into position, the cutter and the feeder for the burs being operated by the rivet-driving mechanism, substantially as set forth.

3. In a riveting machine, an operatingtreadle, a mechanism connected thereto for driving the rivets, a cutter which is operated by the same mechanism for cutting off the ends of the rivets and a mechanism connected to the treadle for clenching the rivets after they have been driven, substantially as specified.

4. In a riveting machine, an operatingtreadle, a mechanism connected thereto for driving the rivets, and a separate mechanism also connected to the treadle for clenching the rivets, combined with a mechanism for cutting off the ends of the rivets, and a mechtreadle, a mechanism connected thereto for driving the rivets, and a separate mechanism,

also connected to the treadle, for clenching the points of the rivets, combined with a cutter for cutting off the ends of the rivets, and a feeding mechanism for the burs, the cutter, and the feeding mechanism for the burs being operated by the mechanism for driving the rivets, substantially as described.

6. In a riveting machine, an operating treadle provided with a rod or lever S, a jointed rod P provided with an enlargement R against which the rod or lever catches for forcing the rod P into an upright position, and the pivoted lever N, combined with the connecting-rod, the rod L. for driving the rivets, a perforated anvil upon which the articles, to be secured together, are placed, and through which the rivet is forced and a setting device for the rivets, substantially as shown.

7. In a riveting machine, an operating treadle provided with the rod or lever S, the slotted bearing, and a spring placed therein, combined with the jointed rod 1? provided with an enlargement R against which the rod or lever S catches, and a mechanism connected to the upper end of the rod P for driving the rivets; the lower end of the rod P being supported upon the spring placed in the slotted bearing, whereby the mechanism is adapted to drive rivets into materials of different thicknesses,substantially as'described.

In testimony that I claim the above l[ have hereunto subscribed my name in the presence of two witnesses.

ROBERT I-I. LOVE.

Witnesses:

Trros. N. TAOKETT, EDWARD L. ALLEN. 

